Home / 8,789,429.20-13,191,919.80-5,190,696.40

Finding the Fourth Proportional to 8,789,429.20, 13,191,919.80 and 5,190,696.40

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Solution

The fourth proportional to 8,789,429.20, 13,191,919.80 and 5,190,696.40 is: 7,790,636.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,789,429.20 : 13,191,919.80 = 5,190,696.40 : x
  2. Step 2: Convert to fraction form
    8,789,429.20/13,191,919.80 = 5,190,696.40/x
  3. Step 3: Cross multiply
    8,789,429.20x = 13,191,919.80 × 5,190,696.40
  4. Step 4: Simplify right side
    8,789,429.20x = 68,475,250,614,948.73
  5. Step 5: Solve for x
    x = 68,475,250,614,948.73/8,789,429.20
  6. Step 6: Final answer
    x = 7,790,636.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.